77791004 has 6 divisors (see below), whose sum is σ = 136134264. Its totient is φ = 38895500.

The previous prime is 77790971. The next prime is 77791027. The reversal of 77791004 is 40019777.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9723872 + ... + 9723879.

It is an arithmetic number, because the mean of its divisors is an integer number (22689044).

Almost surely, 2^77791004 is an apocalyptic number.

It is an amenable number.

77791004 is a deficient number, since it is larger than the sum of its proper divisors (58343260).

77791004 is a wasteful number, since it uses less digits than its factorization.

77791004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19447755 (or 19447753 counting only the distinct ones).

The product of its (nonzero) digits is 12348, while the sum is 35.

The square root of 77791004 is about 8819.9208613230. The cubic root of 77791004 is about 426.8839163263.

The spelling of 77791004 in words is "seventy-seven million, seven hundred ninety-one thousand, four".